<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>上传文件</title>
</head>
<body>
先打开 查看f12进度 再上传
<form action="/up" method="post" enctype="multipart/form-data">
<input name="f" type="file" ><br>
    <input type="submit">
</form>
</body>
</html>
